RECON: TNO occultation with 471335

Event between (471335) 11OD16 and star GA0920:00096499 with event index number of 2173859

Geocentric closest approach at 2024/06/21 19:49:28 UTC

J2000 position of star is 01:04:53.5 +03:47:48
Equinox of date position of star is 01:06:06.9 +03:55:23
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 108 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=22.1

Object is 19.5 AU from the Sun and 19.8 AU from the Earth.
Apparent velocity is 15.5 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 62 seconds.
The 1-sigma cross-track error in the shadow position is 787 km.

The object has an absolute magnitude Hv=8.9
Diameter=100.0 km assuming a 5% albedo -- 6.5 sec chord
Diameter=40.8 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 471335, (2024/06/21 19:48UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:59.8 -29:29:31  1.2 45.22  66
Algenib        00:14:30.0 +15:19:10  2.8 17.07 102
80 Psc         01:09:38.0 +05:46:43  5.5  2.04 110
PPM 144252     01:06:57.9 +04:19:43  8.1  0.45 108
PPM 144244     01:06:08.9 +03:59:56  9.5  0.07 108
471335         01:06:09.4 +03:55:38 14.1       108
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 471335, (2024/06/21 19:48UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 45.22  66
Algenib        00:13:14.2 +15:11:01  2.8 17.07 102
80 Psc         01:08:21.8 +05:38:55  5.5  2.04 110
PPM 144252     01:05:42.0 +04:11:53  8.1  0.45 108
PPM 144244     01:04:53.0 +03:52:06  9.5  0.07 108
471335         01:04:53.5 +03:47:48 14.1       108
Positions are for J2000

Event circumstances last updated at 2023/09/03 03:04:42 UT

Marc W. Buie, Southwest Research Institute

RECON